With xamarin.fontawesome you can use the popular icon library FontAwesome 5.2.0 within your Xamarin Forms applications. Android and iOS supported
You can download source and build project on your own or install package via nuget
PM> Install-Package xamarin.fontawesome
Add the Font Awesome font files to your Resources folder in your project and add them in your Info.plist file.
For more details on how to include custom fonts in iOS: Click here
First define namespace in your xaml file:
<ContentPage
x:Class="My.Awesome.Page"
xmlns="http://xamarin.com/schemas/2014/forms"
xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
xmlns:fa="clr-namespace:Xamarin.Forms.FontAwesome.Controls;assembly=Xamarin.Forms.FontAwesome">
...
</ContentPage>
After that you can use the fa:Icon control to display awesome icons. Property FaName specifies the icon name to display. If an icon has more then one style you can switch it with property FaStyle between Brands, Regular und Solid. The fa:Icon control size can be changed wirh FontSize property. The color can be changed with FontColor property.
...
<Grid>
<fa:Icon
FaName="bars"
FaStyle="Solid"
FontSize="26"
HorizontalOptions="Start"
TextColor="#00FF00" />
</Grid>
...